2results about How to "Large output displacement" patented technology

The utility model relates to petroleum production equipment technical field especially discloses a kind of annular high-pressure manifold, including high-pressure discharge component, high-pressure discharge component is arranged at the both ends of fracturing pump and with fracturing pump forms annular pipeline closed loop, further including protection component, protection component is arranged at high-pressure discharge component side.The utility model is reduced by using annular manifold as a whole, the flow resistance of fracturing fluid in fracturing pump and manifold, with buffer, reduce energy loss, make pressure boost faster, balance the vibration brought by inside stroke of fracturing pump and have safe fire extinguishing function.

This invention discloses a linear displacement actuator based on a single-pass shape memory alloy, comprising a housing, within which a movable cam is disposed. An auxiliary spring and a shape memory alloy spring are respectively disposed on opposite sides of the movable cam. Electrode plate I and electrode plate II are respectively disposed at both ends of the shape memory alloy spring. An output rod is connected to the movable cam via rollers. This invention solves the problem of difficulty in achieving high-precision deformation control in existing actuators due to the nonlinear deformation characteristics of shape memory alloys.